Is it normal that i dream about people dying in front of me?

There's this dream I had where the protagonists die right in front of me as the antagonist couldn't help but laugh, I travelled back to earth and destroyed the city and did the same thing watch people die in front of me while the whole city goes on fire except the other protagonists try and stop me. So I went telling the other heroes " So you as well have met your demise? I will obliterate you like the tiny insect you are! Hahahahahahaha", they replied with " I'm here to stop you, even if we need to die to stop you! ", I strangled the protagonists and went dying too in front of the burning city with destroyed buildings and destroyed cars.

After killing the heroes me and the other antagonists went conquering the planet for good.